/*
 * Copyright 2017 StreamSets Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.streamsets.pipeline.stage.bigquery.origin;

import com.streamsets.pipeline.api.Config;
import com.streamsets.pipeline.api.StageUpgrader;
import com.streamsets.pipeline.stage.common.CredentialsProviderType;

import java.util.List;

public class BigQuerySourceUpgrader implements StageUpgrader {

  @Override
  public List<Config> upgrade(
      String library, String stageName, String stageInstance, int fromVersion, int toVersion, List<Config> configs
  ) {
    List<Config> newConfigs;
    switch (fromVersion) {
      case 1:
        newConfigs = upgradeV1(configs);
        break;
      default:
        newConfigs = configs;
    }
    return newConfigs;
  }

  private static List<Config> upgradeV1(List<Config> configs) {
    configs.add(new Config("conf.credentials.credentialsProvider", CredentialsProviderType.JSON_PROVIDER));
    return configs;
  }
}
